	US 11,930,523 B2
	Data transmission method and terminal device
Yunbo Han, Shenzhen (CN); Zhiqiang Song, Chengdu (CN); Hongcheng Zhuang, Shenzhen (CN); Bingguang Peng, Shanghai (CN); and Zhenguo Du, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Appl. No. 17/286,386
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Oct. 17, 2019, PCT No. PCT/CN2019/111644 § 371(c)(1), (2) Date Apr. 16, 2021, PCT Pub. No. WO2020/078415, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 201811210887.1 (CN), filed on Oct. 17, 2018; and application No. 201811551314.5 (CN), filed on Dec. 18, 2018.
Prior Publication US 2021/0352683 A1, Nov. 11, 2021
Int. Cl. H04W 72/543 (2023.01); H04W 72/1268 (2023.01); H04W 72/542 (2023.01)

CPC H04W 72/543 (2023.01) [H04W 72/1268 (2013.01); H04W 72/542 (2023.01)]

12 Claims

1. A data transmission method, comprising:

obtaining, by a terminal device, a grant-free (GF) resource configured by a base station;

obtaining, by the terminal device, a target service corresponding to to-be-transmitted data;

responsive to determining that the target service is not in a preset list, transmitting, by the terminal device, the to-be-transmitted data by using the GF resource, or

responsive to determining that the target service is in the preset list, obtaining, by the terminal device, a current channel quality;

comparing the current channel quality with a first preset range and a second preset range, wherein the first preset range is different from the second present range; and

responsive to determining that the current channel quality is a first channel quality that falls within the first preset range, transmitting, by the terminal device, the to-be-transmitted data by using the GF resource, or

responsive to determining that the current channel quality is a second channel quality that falls within the second preset range, transmitting, by the terminal device, the to-be-transmitted data by using a grant-based (GB) resource,

wherein the first channel quality is better than the second channel quality;

wherein a parameter related to the current channel quality comprises:

at least one of a reference signal received power (RSRP), reference signal received quality (RSRQ), a reference signal carrier-to-interference-and-noise ratio (RS-CINR), or a path loss (PL) of a channel corresponding to the current channel quality;

wherein:

the first channel quality meets at least one of the following: the RSRP is greater than a first threshold, the RSRQ is greater than a second threshold, the RS-CINR is greater than a third threshold, or the PL is less than a fourth threshold; and

the second channel quality meets at least one of the following: the RSRP is less than the first threshold, the RSRQ is less than the second threshold, the RS-CINR is less than the third threshold, or the PL is greater than the fourth threshold;

wherein the obtaining, by the terminal device, the GF resource configured by the base station comprises: receiving, by the terminal device, GF configuration information sent by the base station;

wherein the method further comprises:

performing, by the terminal device, a calculation based on the GF configuration information, to determine the first preset range and the second preset range; and

wherein the performing, by the terminal device, the calculation based on the GF configuration information, to determine the first preset range and the second preset range comprises:

performing, by the terminal device, a calculation according to a first preset formula based on a maximum transmit power, P_CMAX, of the terminal device, a reference transmit power, P_T,RS, of a downlink signal, and the GF configuration information, to obtain the first threshold.